2017 Bird Bikes Zero TR Base M

Build

650B/27.5 in × 2.4 in

Insights

Average stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of Bird Bikes Zero TR
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
619mm
Reach
447mm
Stack to Reach Ratio
1.38:1
Seat Tube Length, Unknown
440mm
Top Tube Length, Effective/Horizontal Unknown
625mm
Top Tube Slope
19deg
Head Tube Angle
66.2deg
Seat Tube Angle
74deg
Head Tube Length
120mm
Bottom Bracket Drop
58mm
Bottom Bracket Height
295mm
Chainstay Length
430mm
Chainstay Length Horizontal
426.1mm
Front-Center
750.2mm
Front-Center Horizontal
747.9mm
Wheelbase
1174mm
Fork Offset/Rake
42mm
Fork Length, Unknown
522mm
Trail
109.8mm
very high
Mechanical Trail
100.4mm
Wheel Flop
40.5mm
Standover Height
685mm
Tire to Pedal Spindle Distance
With 170 mm cranks
227.2mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
125mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.4in
Tire Outer Diameter
705.9mm
Bike Length with Tires
1879.9mm
Suspension Type
Hardtail (Front suspension)
Bar Type
Flat Bar
Fork Travel
130mm
Suspension Sag
Unknown
Frame Material
Aluminum
Fork Material
Unknown
Brake Type
Disc
Source:https://www.bird.bike/wp-content/uploads/2018/11/Zero-TR-Technical-Data-Sheet-V1.0.svg